Finite Group Databasebeta

#34175988

order20224
automorphism?
homologyAbelianization (H1) = C42 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7478

Subgroups

subgroupG/H
centerC22#19098363
commutatorC16×C79C42
FrattiniC22×C16C2×D79
FittingC2×#368×C79C2
socleC22×C79#357
prime radicalC23×C79SD32
cosocleC22×C16×C79C22
hypercenterC2×#368D79
hypocenterC79#7478
LCSG ▷ C16×C79 ▷ C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ C22×C16 ◁ C2×#368

174 conjugacy classes of subgroups; only the 95 normal subgroups are shown.

normal subgroups only

This group has 174 conjugacy classes of subgroups — too many to draw. Only its 95 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 115
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 2 generators on 115 points:

(1,2)(3,4)(5,6)(7,8)(9,10)(11,12)(13,14)(15,16)(17,18)(19,20)(21,22)(23,24)(25,26)(27,28)(29,30)(31,32)(33,34)(35,36)(37,38)(39,40)(41,42)(43,44)(45,46)(47,48)(49,50)(51,52)(53,54)(55,56)(57,58)(59,60)(61,62)(63,64)(65,66)(67,68)(69,70)(71,72)(73,74)(75,76)(77,78)(84,85,87,92,102,107,86,97,99,110,114,105,98,104,113,106,90,95,103,109,88,93,101,91,89,94,96,108,112,115,100,111);(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15)(16,17)(18,19)(20,21)(22,23)(24,25)(26,27)(28,29)(30,31)(32,33)(34,35)(36,37)(38,39)(40,41)(42,43)(44,45)(46,47)(48,49)(50,51)(52,53)(54,55)(56,57)(58,59)(60,61)(62,63)(64,65)(66,67)(68,69)(70,71)(72,73)(74,75)(76,77)(78,79)(80,81,82,83)(85,91)(86,96)(87,100)(88,98)(89,99)(92,93)(94,111)(95,97)(101,114)(102,112)(103,113)(104,105)(106,110)(107,109)(108,115)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=fg,e^2=fh,f^2=gh,g^2=h,b^a=bc,c^a=cf,e^a=efgh,f^a=fg,g^a=gh,i^a=i^78,c^b=ch,i^b=i^78

Conjugacy classes & character table

1768 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57287);